Bolt anchor



R. @GDEN ET AL BOLT ANCHOR Filed July 22. 1921 Patented @ct. 23, 1923.

. UNHTED STATES RALPH EDWARD OGDEN, OF MOUNTAINVILLE, NEW YORK. AN DCHARLES {3. TMKIN earner SON, OF PLAINFIELD, NEW JERSEY, ASSIGNORS T0 J.EDWARD OGDEN, 0F MOUN- TAINVILLE, NEW YORK.

BOLT ANCHOR.

Application filed Jilly 22, 1921. Serial No. 486,743.

To all whom it may concern:

Be it known that we, RALPH EDWARD OG- DEN, a citizen of the UnitedStates, and a v resident of Mounta-inville, town of Cornwall, Oran eCounty, and State of New York, and HARLES C. ToMKINsoN, a citizen of theUnited States, and a resident of Plainfield, county of Union, and Stateof New Jersey, have invented certain new and useful Improvements in BoltAnchors, of which the following is a specification.

This invention relates to bolt anchors and more particularly to anchorsof the character employed in walls of brick, stone or cementitiousmaterial, not adapted to directly receive a threaded bolt.

' One of the objects of the invention is to provide a shield comprisinga plurality of sections and a nut for expanding the shield having meansfor retaining the sections together.

Another object of the invention is to provide a sectional expansionshield and an expanding nut having portions adapted to hinterlock saidsections thereby retaining them against separation.

Another object of the invention is to provide a bolt anchor that will besimple in construction, efficient in operation and may be economicallymanufactured.

Further objects of the invention will appear as the descriptionproceeds.

The objects of the invention are attained in the embodiment illustratedby a shield preferably formed of sheet metal stamping and having notchesor slots constructed and arranged to receive projecting pontions of theexpanding nut and having fingers formed by the slots and bent inwardlyand cooperating with the notches and the projections on the nut to lockthe sections of the shield against separation.

Referring to the drawings.

Fig. 1 is a sectional elevation of a portion of a wall having an openingtherein and anchorin means, constructed in accordance with t einvention, expanded in the open- Fig. 2 is a sectional elevation of thebolt anchor before the expansion of the shield. Fig. 3 isan elevation ofthe expansion shield. 4

Fig. i is an end elevation. of the rear end of the shield.

Fig. 5 is an end elevation of the opposite end of the shield.

Figs. 6 and 7 are sectional elevations taken substantially on lines 6-6and 7-7 respectively of Fig. 2.

Fig. 8 is a perspective view of the nut used in connection with theshield shown in Figs. 1-7.

Fig. 9 is a view similar to Fig. 3 but showing the shield with a springclip for securing the sections together, and

Fig. 10 is a perspective view of another form of nut embodying myinvention.

The expansion shield is preferably formed from sheet metal of uniformthicle ness and is divided longitudinally throughout its length intosections 10 and 11. If desired these sections may be pressed inwardly asshown at 12 to form a support and guide for the bolt 13, but it will benoted that no split ring or retaining means is required in theconstruction about to be to form fingers or tines 16 and the taperedportions also form V-shaped notches between the fingers. The ends of thefingers or tines are bent inwardly as shown at 17 in a direction towardthe longitudinal axis of the shield and as shown in Fig. 4: the ends ofthese fingers extend approximately to the axis of the shield and form anabutment for a bolt.

The nut 18 which is threaded on the bolt 13 is approximately cylindricaland is provided on its outer surface with V-shaped projections 19 and 19adapted to be positioned in the if-shaped notches formed in and betweenthe shield sections. The end of the nut at the base of the projections19 and 19 also has notches or recesses 20 formed between theprojections. These recesses receive the bent over ends 17 of the fingers16 and thus retain the sections against lateral separation. in Figs. 2and 3 the nut is shown in position in the shield. with the projections19 extending into the notches and the fingers extending into therecesses 20. From the showing n Figs. 4

other and converge below the ends of projections 19 of the nut. In thisway lateral separation of the sections is prevented. Referringparticularly to Fig. 3, it will be noted that the outer surfaces of theprojections 19 lie in a cylinder having a diameter equal to the diameterof the outer periphery of the shield.

It will be seen that the ends 17 of the fingers project into the notchesor recesses 20 and retain the sections of the shield against separationand in engagement with the nut. No additional retaining means such as aspring clip is therefore required.

The projections 19' serve to spread the ends of each section apart onexpansion and the other projections 19 on the nut serve to separate thesections on expansion and to spread the adjacent fingers.

The bolt anchor above described operates as follows. When the bolt 13has been inserted throu h an opening in an object 25 who secure the boltis threaded into the nut 18 within the shield. The shield is theninserted into the opening in the wall 21 and upon the initial rotationof the bolt the end of the bolt will abut against the inturned ends 17of the fingers 16. Any longitudinal movement of the bolt is thereforeprevented and the nut 18 will travel along the bolt.

As the nut travels along the bolt the pro jections 19 and 19 on the nutwill spread the fingers 16 forcing them into engagement with the wall ofthe opening in which the anchor is inserted.

In the form of the invention shown in Figs. 9 and 10 the end of the nutis not reeessed and therefore the projections 19 serve merely asexpansion members. 'A split ring 22 is used to retain the sectionstogether.

From the above specification it will be seen that a simple and practicalconstruction of the bolt anchor has been provided and a constructionhaving a minimum number of parts. Furthermore, it will be evident thatthe structure described may manufactured and will be efficient inoperation. a 1' Although one specific embodiment of the invention hasbeen illustrated and described, it will be understood that the inventionis capable of modification and that changes in the construction and inthe arrangement of the cooperating parts may be made without departingfrom the spirit or scope of the invention as expressed in the followingclaims.

What we claim is: I 1. In combination, an expansion shield comprising aplurality of sections, each sec- 7 tion having a notch therein spacedfrom the longitudinal edges thereof and a nut having portions disposedwithin said notches.

2. In combination, an expansion shield comprising a lurality ofsections, each sec-- tion having a shapednotch therein spaced beeconomically.

from the longitudinal edges thereof and a nut having portions disposedwithin said notches.

3. In combination, an expansion shield comprising a plurality ofsections, each section having a notch therein intermediate itslongitudinal edges. said sections having registering notches at theiredges and a nut having projections disposed in said notches.

4. In combination, a shield having longitudinal slots forming separatedtapered fingers, the ends of said fingers being bent inwardly toward thelongitudinal axis of the shield, and a nut having portions extendinginto and disposed within said slots.

5. In combination, an expansion shield comprising a plurality ofsections, each section havinga V-shaped notch therein intermediate itslongitudinal edges, said sections having registering notches at theiredges and a nut having projections disposed in said notches.

6. In combination, a shield having a plurality of V-shaped notchestherein, the points of the notches extending in a direction toward theouter end of the shield, said shield also having inturned fingers formedby the notches and a nut having projections adapted to fit in saidnotches.

7. In combination, a, shield comprising a plurality of sections, forengaging said sections and retaining the sections against separation.

8. In combination, a sectional shield having a plurality of fingers anda nut having means for engaging said fingers and retain ing the shieldsections against separation.

9. In combination, ing a plurality of tapered fingers and a nut havingmeans for engaging said fingers and retaining the shield sectionsagainst separation. a 1

10. In combination, a sectional shield having a plurality of tapered,inwardly bent fingers and a nut having means forengag ing said fingersand retaining the shield sections against separation.

11. In combination, a sectional shield having tapered fingers at one endthereof and a nut having recesses receiving and retaining said fingers.

12. In combination, a sectional shield having tapered, inwardly bent,fingers at one end thereof and a nut having recesses receiving thefingers and wedge shaped pro-.

jections fitting between spread said fingers.

13. In combination, a shield having longitudinal slots formingseparated, taper fingers, and a nut having portions receiving saidfingers and portions extending into and fitting said slots.

14. In combination, tudinal' slots forming separated tapered fingers,the ends of said fingers being bent and adapted to a shield havinglongiand a nut having means a sectional shield ha'vinwardly toward thelongitudinal axis of the shield, and a nut having recesses receiving thebent ends of the fingers and retaining the sections on the nut.

15. In combination, a sectional shield-having inwardly bent fingers atone end there-- of and a nut having projections extending between thefingers and recesses between the projections receiving and retaining thefingers.

16. In combination, a sectional shield having longitudinally extending,separated, inwardly bent fingers and a nut having recesses for receivingand .retaining -said fingers.

17. In combination, a sectional shield having longitudinally extending,separated, inwardly bent fingers and a nut having recesses in one endfor receiving and retaining said fingers.

18. In combination, a shield having a. plurality of V-shaped notchestherein, the points of the notches extending in a direction toward theouter end of the shield, said shield also having inturned fingers formedby the notches and a nut having projections adapted to fit in saidnotches, and having recesses receiving said fingers.

19. In combination, a sectional shield having a plurality of taperedfingers and a nut having recesses for receiving said fingers andretaining the shield sections against separation.

20. In combination, a sectional shield having inwardly extending endportions and a nut in said shield having recessed portions receiving theinwardly extending portions of-said sections.

21. In combination, a sectional shield hav ing inwardly extending endportions, a nut having projections extending between said portions ofthe shield and having recesses between the projections receiving theinwardly extending portions of the shield.

22. In combination, a sectional shield having inwardly extending endportions, a nut having wedge-shaped projections extending between saidportions of the shield and having recesses between the projectionsreceiving the inwardly extending portions of the shield.

23. In combination, a cylindrical section al shield having inwardlyextending end portions, a nut having projections extending between saidportions of the shield and having recesses between the projections receiving the inwardly extending portions of the shield, the outer surfaceof the nut projections being disposed in the cylindrical surface of theouter shield surface.

24. In combination, a cylindrical sectional shield having inwardlyextendin end portions, a nut having wedge-shape pro jections extendingbetween said portions of the shield and having recesses between theprojections receiving the inwardly extending portions of the shield, theouter surface of the nut projections being disposed in the gylindricalsurface of the outer shield surace.

In witness whereof we have hereunto set our hands this 12th day of July,1921.

RALPH EDWARD OGDEN. CHARLES C. TOMKINSON. lVitness:

I. B. Moons.

